PART I.] Rainfall and Cholera-prevalence at Cawnpore and Agra. 275 



over 100,000. Eecords have been kept at this station of the cases of cholera that have 

 occurred among the troops and prisoners for more than 'half a century, and these now 

 form an aggregate of 4,437. Nearly a fourth of the entire number of cases has occurred 

 during the month of August, although the number of annual visitations of the disease 

 was greater in the month of June, the latter month having furnished 653 cases in 

 the course of 39 annual visitations, and the month of August 1,246 cases in the course 

 of 37. The percentage of spring cholera is still less than at Allahabad, being 35-9 in 

 the latter and 22*4 in the former, and the rainy-season cholera is increased in nearly 

 the same proportion as the spring cholera is diminished. 



TABLE LX. 



The, average Monthly Rainfall and the total Cholera among the European 

 and Native troops and prisoners at Cawnpore. 



(6) Agra. 



Crossing over to the Jumna, we select as an illustrative station the still larger 

 city of Agra. Here also the cholera statistics of troops and prisoners have been collected 

 over a period of 51 years and now furnish a total of 3,501 cases, 3,039 of which have 

 occurred during the rainy season, and nearly a third during the month of August 

 alone. 



The months in which cases of cholera have most frequently occurred are August 

 and May, the former month showing cholera on 39, and the latter on 23 occasions. 



The aggregate of cases occurring in May is, however, 9 times lower than that of 

 August. 



TABLE LXL 



The average Monthly Water-level, Rainfall, Relative Humidity, Temperature, Atmo- 

 spheric Pressure, and the total Cholera among the European and Native troops 

 and prisoners at Agra. 



